Improvement in furnaces for steam and other devices



nitdl tate DAVID HARGER, OF 'DES MOINE-S, IOWA'.

Letters Paten-t No. 96,001, dated October 19, 1869.

IMPROVEMENT IN FURNACES FOR STEAM AND OTHER DEVIGES.

The Schedule referred to in these Letten Patent and making put of thelame.

To all whom it may concern:

Be it known that I, DAVID HARGER, of Des Moines, in the county of Polk,and in the Sta-te of Iowa, have invented certain new and usefulImprovements in Furnaces; andv do hereby declare that the followingl isa full, clear, and exact description thereof, reference being had to theaccompanying drawings, and to the letters of reference marked theleon,making a part of this specification.

My invention is intended as an improvement upon the improvement infurnaces, for which a patent was granted to me, November 5, 1867, andconsists in pro. viding the pipe therein described, through which theAair is distributed to the re, with box-apertures, or with a slotaperturehaving partitions.

In order to enable others skilledin the art to which my inventionappertains,- to make and use the same, I will now proceed to describeits construct-ion and operation, referring to the annexed drawings, inwhich- Figure l is a side view, part in section, of the pipe with.box-apertures, and

Figure 2 is a side view of the pipe with slot aperture.

Figure 3 is a transverse section of the pipe.

A represents a portion of the pipe that extends under and across thefire-box in a furnace, said pipe extending and leading to a fan,situated at any convenient place in the same or another building, oroutside,

for the purpose of conducting cold air to the furnace or grate, anddistributing 'it properly to the fire.

' The upper side of the pipe A is'provided with a series of elongatedapertures, from which project nozzles a a, as seen in fig, 1, forming,as I call them, boxapertures, through which the air is discharged.

In fig. 2, I, have represented the pipe A as having an open joint orslot extending-the whole length ot' the same, from which flanges extendupward, forming an elongated box, b, which, by partitions e e, isdivided into any number of channels, through which the airisdistributed.

I do not confine myself, in the use of myinvention, to furnaces alone,as it is equally applicable to stationary steam-mills, vessels,locomotives, or in fact any place where a fire is to ce kept up.

Having thus fully described my invention,

What I claim as new, and desire to secure by Letv ters Patent, is-

The pipe A, constructed, as described, with boxapertures a a, or aslotted aperture, b, with partitions e e, substantially as herein setfort In testimony that I claim the foregoing, I have hereunto set myhand, this 2d day of J une, 1869.

Witnesses: `DAVID HAR-GER.

ADAM HOWELL, M. H. DEMnN'r.

